Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Group decisions: From compromise to leadership in pigeon homing

By studying how homing pigeons decide between two attractive options--following a habitual route home and flying in the company of another homing pigeon--researchers have deepened our understanding of the forces that underlie decision-making by social animals. The findings are reported by a research group led by Dora Biro of the University of Oxford and appear in the November 7th issue of Current Biology.

Social animals have to make decisions that affect not just themselves, but everyone in the group. For example, when embarking on a journey together, individuals must agree on the route--a difficult task if group members cannot assess who are the best navigators or who is best informed about possible routes. Is a "democratic" average of everyone's opinion best? Or is it better to trust a leader? And what circumstances influence how animals decide which of these strategies to follow?

In the new study, the researchers used miniature GPS tracking devices to follow the homing flights of pairs of pigeons, where both individuals had their own, previously established preferred routes leading back to the loft. When the birds were released as a pair, and when the two preferred routes were not very different, the conflict between birds' preferences was resolved by a mutual compromise in which both birds flew by an intermediate route. When preferred routes of the two birds differed greatly, however, the compromise position was replaced by a scenario in which the preferred route of one bird--who would emerge as the "leader"--was followed by both birds for the rest of the journey.

Using a mathematical model to better understand the basis of the paired birds' navigation choices, the researchers found that both forms of decision-making could emerge from just two simple forces acting simultaneously on the pigeons' behavior: "move toward your familiar route" and "move toward your partner." In cases of small disagreements about the route, these two forces, or rules, lead to mutual compromise. However, when preferred routes are sufficiently different, behavior resembling compromise turns to behavior characterized by leadership as one bird abandons its own route to instead follow that of its partner. The outcome of the mathematical modeling therefore indicated that compromise and leadership are two outcomes of the same decision-making process.

... more about:
»compromise »individual »preferred

In another aspect of the study, the analysis of pigeon behavior showed that birds flying in pairs seem to take more efficient routes home than those flying alone, suggesting that in addition to safety in numbers, traveling in the company of others brings navigational benefits to individual group members.

Heidi Hardman | EurekAlert!
Further information:

Further reports about: compromise individual preferred

More articles from Life Sciences:

nachricht Gene therapy shows promise for treating Niemann-Pick disease type C1
27.10.2016 | NIH/National Human Genome Research Institute

nachricht 'Neighbor maps' reveal the genome's 3-D shape
27.10.2016 | International School of Advanced Studies (SISSA)

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

How nanoscience will improve our health and lives in the coming years

27.10.2016 | Materials Sciences

OU-led team discovers rare, newborn tri-star system using ALMA

27.10.2016 | Physics and Astronomy

'Neighbor maps' reveal the genome's 3-D shape

27.10.2016 | Life Sciences

More VideoLinks >>>